Deprecate <none> element in Core #173
Description
Hi @fred-wang !
In the MathML Full meeting today (November 10, 2022), the group had consensus that we should explore further a deprecation for the <none> element, based on my issue #428 in the MathML issues.
I was tasked by the group to also open a mirroring issue in the MathML Core repository, and ask you (Frédéric) if the existing implementations of MathML Core are in full compliance with the text describing <none> in the Core spec, or if there are any special implementation details we should be aware of.
If no further changes are needed, we are likely to proceed with a deprecation step. Does that sound good on your end? Thanks!